Transport signature of the magnetic Berezinskii-Kosterlitz-Thouless transition

被引：14

作者：

Kim, Se Kwon ^{[1
,2
]}

Chung, Suk Bum ^{[3
,4
,5
,6
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea

[2] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

[3] Univ Seoul, Dept Phys, Seoul 02504, South Korea

[4] Univ Seoul, Nat Sci Res Inst, Seoul 02504, South Korea

[5] Korea Inst Adv Study, Sch Phys, Seoul 02455, South Korea

[6] Seoul Natl Univ, Inst Basic Sci IBS, Ctr Correlated Electron Syst, Seoul 08826, South Korea

来源：

SCIPOST PHYSICS | 2021年 / 10卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

LONG-RANGE ORDER; PHASE-TRANSITIONS; VORTICES; DYNAMICS; RENORMALIZATION; FERROMAGNETISM; DISSIPATION; CRYSTAL;

D O I：

10.21468/SciPostPhys.10.3.068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Motivated by recent experimental progress in 2D magnetism, we theoretically study spin transport in 2D easy-plane magnets at finite temperatures across the Berezinskii-Kosterlitz-Thouless (BKT) phase transition, by developing a duality mapping to the 2+1D electromagnetism with the full account of spin's finite lifetime. In particular, we find that the non-conservation of spin gives rise to a distinct signature across the BKT transition, with the spin current decaying with distance power-law (exponentially) below (above) the transition; this is detectable in the proposed experiment with NiPS3 and CrCl3.

引用

页数：14

共 67 条

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